~/talk

Describe & Conquer (& Freek)

on YouTube 48m
Talkat Lambda World 2016 · 2016-09-30..10-01· [functional-programming, scala]

speaker

name:Pascal Voitot
links:none on file

resources

video:https://youtu.be/JX0bJUqZ0MY
slides:none on file

summary

Concrete recipe and tradeoffs for separating business description from execution using Scala: represent domain actions as Free monads over a combined Coproducts DSL, compile them to runtime monads via natural transformations, and use the OSS Freek library (≈800 lines) plus the SI-2712 patch to remove boilerplate. Implementation runs in production (v0.6.14), compiler tricks convert long coproduct chains to balanced trees and cut compile times ~2–3x for ten DSLs, at the cost of GC pressure and nontrivial runtime/free-structure overhead.

AI-written summary · about

chapters (12)

  1. 0:00Intro
  2. 9:33Representation
  3. 15:48Scala
  4. 17:28Logic
  5. 23:12Freak
  6. 26:03History
  7. 29:55Scalar
  8. 31:25ID
  9. 34:51Stacking
  10. 38:44Status of Freek
  11. 44:43Future
  12. 46:07What will we do

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